DocumentCode :
2747494
Title :
Mobility Aware Playout Algorithm for Interactive Audio Streaming over Wireless Ad-Hoc Networks
Author :
Jelassi, Sofiene ; Youssef, Habib
Author_Institution :
Sousse Univ., Sousse
fYear :
2007
fDate :
8-11 Oct. 2007
Firstpage :
1
Lastpage :
3
Abstract :
Interactive audio streaming over mobile wireless ad-hoc networks is a difficult task since these networks exhibit challenging characteristics such as mobility of all nodes, limited end-to-end bandwidth, high error rate, etc. Interactive network applications require the reception of each media unit before its deadline in order to guarantee a continuous playback process. To satisfy this constraint, a de-jitter buffer is installed on receiver host in order to mitigate the effect of delay jitter on perceptual quality. To maximize the perceived quality and to minimize the buffer space allocated by the playback audio process, the de-jitter delay must be adapted dynamically within an audio session. In this paper, we propose an adjustment playout algorithm for interactive audio applications over wireless ad-hoc networks. The proposed algorithm denoted MAP A (mobility aware playout algorithm) adjusts the playout delay based on both node mobility, which characterizes mobile ad-hoc networks, and talk-spurt, which is the intrinsic characteristic of a voice signal. The mobility detection mechanism is done at the receiver application layer. We assess the perceptual quality using an advanced evaluation method based on E-Model concepts and including the variable nature of impairment during an audio session. Simulation results show that the proposed algorithm outperforms significantly conventional playout algorithms specifically over a highly varying topology.
Keywords :
ad hoc networks; jitter; media streaming; mobile radio; radiofrequency interference; audio session; dejitter buffer; delay jitter; interactive audio streaming; limited end-to-end bandwidth; mobile wireless ad-hoc networks; mobility aware playout algorithm; mobility detection mechanism; node mobility; playback audio process; Ad hoc networks; Bandwidth; Delay; Electronic mail; Error analysis; Internet; Jitter; Network topology; Peer to peer computing; Streaming media; Packet based phone conversation; Playout algorithms; User satisfaction; Wireless ad-hoc networks;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Mobile Adhoc and Sensor Systems, 2007. MASS 2007. IEEE International Conference on
Conference_Location :
Pisa
Print_ISBN :
978-1-4244-1454-3
Electronic_ISBN :
978-1-4244-1455-0
Type :
conf
DOI :
10.1109/MOBHOC.2007.4428614
Filename :
4428614
Link To Document :
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